Abstract

Among Australians treated for advanced HIV disease, a suboptimal virological response was associated with allele 2 at interleukin 1 alpha (IL1A)-889 and IL1A+4845. This is confirmed and investigated using patients from AIDS Clinical Trials Group study 384 (n = 532). Among non-African-American patients with CD4 T-cell count of ≤100 cells/μl at baseline, IL1A+4845TT was associated with poor virological outcome (P = 0.03). Differences were smaller with higher baseline CD4 T-cell counts. IL1A-889 and IL1A+4845 were not in linkage disequilibrium in African-American patients, and IL1A+4845T did not affect outcome.